Jaws, Sharks, Rays and Lobe finned fish 0.0 / 5 ? OtherLife on EarthUniversityNone Created by: MariaC5Created on: 23-04-18 12:58 What were modified to form jaws (which at first had no teeth)? Anterior gill arches 1 of 19 Jaws with no teeth were used in buccal pump to increase Water flow across gills 2 of 19 Who were the first fishes to have jaws? Placoderms 3 of 19 Sharks and Rays belong to what class? Chondrichthyes 4 of 19 Chondrichthyes are Both 5 of 19 Why do Chondrichthyes have a poor fossil record? Skeletons are made of cartilage 6 of 19 What does a swim bladder do? Achieves neutral buoyancy 7 of 19 Which fins are paired? Pectoral and pelvic 8 of 19 Sharks move via ... undulations of the body and caudal fin side-to-side 9 of 19 The basking shark swims with its mouth open, is this free of problems? No 10 of 19 In the evolution of bony skeletons, cartilage is replaced by Calcified rigid bone 11 of 19 A bony skeleton is less or more effective at serving as an attachment point for muscles? More 12 of 19 Is bone better at transmitting muscular force than cartilage? Yes 13 of 19 The skeleton of the paired fins is formed from many small or large bones? Small 14 of 19 Do fins contain a lot of muscle? No 15 of 19 The fins of lobbed finned fish are thought of to used as what? Supporting the body on land 16 of 19 Coelacanths and lungfish are types of what? Lobe-finned fish 17 of 19 Lungfish have a modified swim bladder that does what? Absorbs oxygen and removes waste 18 of 19 How do modern lungfish survive when pools dry? They burrow into the mud & sealing themselves within a mucous-lined burrow 19 of 19
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